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A method and system for processing heavy feed oils and aromatic-rich distillates

A technology for feedstock oil and distillate oil, which is applied in the system field of processing heavy feedstock oil and aromatic-rich distillate oil, can solve the problems of high softening point, short operation period, and impact on combined technical and economic benefits.

Active Publication Date: 2022-06-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve this problem, the residual oil solvent deasphalting (demetallization)-hydrotreating-catalytic cracking combined process technology (SHF) developed by Sinopec Petrochemical Research Institute is to maximize the production of vehicle-use oil from low-value vacuum residue An innovative technology that cleans fuel and prolongs the operating cycle, but due to the high softening point of deoiled asphaltenes (DOA), it is difficult to transport and utilize, which limits the promotion of SHF technology
[0005] The new combined process of residuum hydrogenation-catalytic cracking (DCC) producing more propylene in the transition to chemical industry is also limited by the influence of asphaltenes and metals in the residuum, the hydrogen content of the hydrogenated residuum is low, and the The operation cycle is short and the DCC propylene yield is low, which affects the economic benefits of the combined technology

Method used

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  • A method and system for processing heavy feed oils and aromatic-rich distillates
  • A method and system for processing heavy feed oils and aromatic-rich distillates
  • A method and system for processing heavy feed oils and aromatic-rich distillates

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specific Embodiment approach

[0074] The conditions of the first hydrotreating unit of deasphalted oil (DAO) in the presence of hydrogen are generally as follows: The hydrotreating technology of DAO is a fixed bed hydrotreating technology. Taking the current industrially mature fixed-bed heavy-residue hydrogenation technology as an example, the reactor or the reaction bed layer includes at least two hydrogenation catalysts, and the heavy-residue hydrogenation catalyst used refers to the hydrogenation catalyst with heavy and residual oil. Combined catalyst with functions such as hydrodemetallization, hydrodesulfurization, hydrodenitrogenation and hydrodecarbon residue. These catalysts are generally supported by porous refractory inorganic oxides such as alumina, and oxides or sulfides of Group VIB and / or Group VIII metals such as W, Mo, Co, Ni, etc. as active components, optionally Catalysts with other additives such as P, Si, F, B and other elements added, such as RDM, RCS series heavy and residual oil hyd...

Embodiment A

[0133] Preparation of rich ore precursor material 1: Select 2000g of RPB110 pseudo-boehmite produced by Sinopec Catalyst Co., Ltd. Changling Branch, of which 1000g is treated at 550 ° C for 2h to obtain about 700g of alumina, and about 700g of alumina and another 1000g of pseudo-boehmite are obtained. The boehmite was thoroughly mixed, then 40g of saffron powder and 20g of citric acid were added, and 2200g of deionized water was added, kneaded and extruded into strips, dried at 300°C for 3h to obtain about 1730g of carrier, and 2100mL of Mo and Ni were added. The solution is saturated and impregnated, and the Mo content in the solution is the same as MoO 3 The mass was 5.5%, and the Ni content was 1.5% by mass of NiO, immersed for half an hour, and then treated at 180° C. for 4 hours to obtain rich ore precursor material 1. Properties are shown in Table 7.

[0134] Preparation of rich ore precursor material 2: Select 2000 g of RPB110 pseudo-boehmite produced by Sinopec Cataly...

Embodiment B

[0137] A kind of vacuum residue oil is used as raw material to carry out solvent deasphalting, and the solvent used is a hydrocarbon mixture with a butane content of more than 75% by weight, and at 120° C., solvent: vacuum residue oil=2:1 (mass ratio) Under the condition of solvent deasphalting, the mass yield of DAO is 68%, and the mass yield of DOA is 32%.

[0138] The properties of the resulting DAO and DOA are shown in Table 1.

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Abstract

The invention relates to the field of hydrocarbon oil processing, and discloses a method and system for processing heavy feed oil and aromatic-rich distillate oil, comprising: (11) introducing heavy feed oil into a solvent deasphalting unit for solvent deasphalting; (12) Introduce the deasphalted oil into the first hydrogenation unit for hydrogenation reaction, and introduce the obtained liquid phase effluent into the DCC unit for reaction; (2) Introduce the aromatic-rich distillate oil into the second hydrogenation unit (3) introducing the deoiled asphalt and aromatics stream into the third reaction unit for hydrogenation reaction; (4) fractionating the liquid phase product of the third reaction unit; (51) The second light component is introduced into the fourth reaction unit for reaction; and (52) the second heavy component is introduced into the delayed coking unit for reaction; or the second heavy component is used as a low-sulfur marine fuel oil component. The foregoing treatment process provided by the present invention can realize high-value utilization of DOA.

Description

technical field [0001] The invention relates to the field of hydrocarbon oil processing, in particular to a method for processing heavy feedstock oil and aromatic-rich distillate oil and a system for processing heavy feedstock oil and aromatic-rich distillate oil. Background technique [0002] Efficient conversion of residual oil is the core of oil refining enterprises. The hydrogenation of fixed-bed residue oil is the key technology for the efficient conversion of residue oil, which has the characteristics of good product quality and mature technology. [0003] However, the high content of asphaltenes and metals in the residual oil is the limiting factor for the operation cycle of the fixed-bed residual oil hydrotreating unit. [0004] To solve this problem, the combined process technology of residual solvent deasphalting (demetallization)-hydroprocessing-catalytic cracking (SHF) developed by Sinopec Petrochemical Research Institute is to maximize the production of automot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2400/02C10G2400/04C10G2400/30C10G2300/1077C10G2300/107C10G2300/202C10G2300/205
Inventor 杨清河贾燕子聂红胡大为牛传峰孙淑玲戴立顺王振户安鹏任亮
Owner CHINA PETROLEUM & CHEM CORP
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